/*
 * Copyright (C) 2019 The Turms Project
 * https://github.com/turms-im/turms
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package im.turms.server.common.infra.healthcheck;

import jakarta.annotation.Nullable;

/**
 * @author James Chen
 */
public record ServiceAvailability(
        Status status,
        @Nullable String reason
) {

    public static final ServiceAvailability AVAILABLE =
            new ServiceAvailability(Status.AVAILABLE, null);
    public static final ServiceAvailability SHUTTING_DOWN =
            new ServiceAvailability(Status.SHUTTING_DOWN, "The server is shutting down");
    public static final ServiceAvailability INACTIVE =
            new ServiceAvailability(Status.INACTIVE, "The server node is inactive");

    public boolean isAvailable() {
        return status == Status.AVAILABLE;
    }

    public enum Status {
        AVAILABLE,
        SHUTTING_DOWN,
        INACTIVE,
        INSUFFICIENT_MEMORY,
        HIGH_CPU_USAGE
    }
}